@daanrongen/signal-mcp

List all Signal accounts registered with the signal-cli daemon.

List all contacts for a Signal account.

List all Signal groups the account is a member of.

Update the Signal profile display name, about text, or avatar for an account. avatarPath must be an absolute path on the signal-cli server filesystem.

Check whether one or more phone numbers are registered on Signal. Note: signal-cli always returns isRegistered: false when querying the account

Send a Signal message to one or more recipients or to a group. Provide either `recipients` (array of E.164 numbers) or `groupId`, not both.

Poll signal-cli for any pending incoming messages. Returns all envelopes received since the last poll.

Subscribe to the signal-cli SSE event stream and collect incoming messages for up to `timeoutMs` milliseconds (default 10s, max 30s). Returns all message envelopes received during that window. Use this for real-time message polling.

React to a specific Signal message with an emoji. Use `remove: true` to remove a previously sent reaction.

Send a typing indicator to a Signal recipient. Typing indicators are ephemeral and expire automatically.

Send read receipts for one or more received messages. Marks the messages as read on the sender

Delete a previously sent Signal message on all recipients

Send one or more files (images, PDFs, audio) as Signal attachments. Files must exist on the signal-cli server filesystem. Optionally include a caption text.